Umbrella cap



FIG. 1 shows a perspective view of a design for an umbrella cap.

FIG. 2 shows a first side view of FIG. 1.

FIG. 3 shows a second side view of FIG. 1.

FIG. 4 shows a top view of FIG. 1; and,

FIG. 5 shows a perspective view of FIG. 1 in use in an umbrella.

The unshaded broken-line features in the figures are for illustrative purposes only and form no part of the claimed design. The umbrella in FIG. 5 is unclaimed environmental subject matter. 

CLAIM The ornamental design for an umbrella cap, as shown and described. 